Rack-and-pinion winding device



June 3, 1924. 1,496,686

M.- L. TABAKIN BACK AND PINION WINDING DEVICE Filed Feb. 10 1922 2SheetsSheet 1 INVENTOR /J0,46 4/ 0 O Q 6 34? z 6 I Xfie/M iljkzah'w,

ATTORNEY WITNESSES;

June 3, 1924.

RACK AND PINION WINDING DEVICE fiZl/X 7 2 4 M. L. TABAKIN Filed Feb, '11922 2 Sheets-Sheet 2 INVENT ATTORNEY Patented June 3, 1924.

UNITED STATES MENDEL L. TABAKiN, or nonromr, vinei nre.

RACK-AND-PINION WINDING nnvrcn.

Application filed February 10, 1922. Serial ltd-535,516.

To all whom it may concern: 4

Be it known that I, MENDEL L. TABAKIN, a citizen of the United States,residing at Norfolk, in the county of Norfolk and State of Virginia,have invented new and useful Improvements in Rack-andPinion VVindingDevices, of which the following is a specification. y p

The object of'thi's invention is to effect the winding of a phonographmotor by means of rack and pinioumechanism employing particular pinionshifting devices described below. 1

With the foregoing and other objects in view, the invention consists inthe novel construction and arrangement of elements described. andclaimed, it "being understood that modifications may be made within thescope of the claims without departing from the spirit of the invention.

In the drawings,

Figure 1 is a view in vertical section, through the upper portion of aphonograph cabinet, showing the operating mechanism I in side elevation;

Figures 2 and 3 are further views of the operating or winding mechanism,in elevation, and on a larger scale;

Figure 4- is a section on line 4-4 of Figure 3;

Figure 5 is a section on line 5-5 of Figure 4;

Figure 6 is a section on line 6-6 of Figure 1.

The cabinet 10 is provided With a lid or cover 11, which may be mountedby means of a special form of hinge 12, including a leaf member 13carried by the table portion of the cabinet, and including a leafportion 14 pivotally mounted at 15.

Carried by leaf portion 14 is a brace, arm, or extension 16, providing areinforcement for the cover and serving the purpose indicated below.

A downwardly extending lug 17 is pivotally connected at 18 with thereciprocable member 20, imparting movement to the rack and pinionmechanism. A spring held pin 22 mounted in the side wall of the coverenters aperture 23 in the element reinforcing the cover and connectedtherewith under normal conditions. When it is desired to permit of thelifting of the cover without operating the winding mechanism, this pin22 is released from engagement with the element, and the reciprocableelement 20 is not operated for imparting movement to the windingmechanism. This arrangement permits of a lifting of the cover when thespring of the motor is fully wound.

Connected with element 20 are parallel spaced rack bars 25 and 26mounted in guard members 27 and 28 and offset with reference to eachother, in'the manner shown in Figure '4. Yoke portions 28 and '29connect the guard member and opposite ends thereof, and permitof theshifting of the pinion 3O transversely of the square portion 31 of theshaft 32. The outer end of this shaft 32 is mounted at 33, and havingslidablebut nonrotatable connection with the inner end of this spindleis a socket element 35 having a square opening therein forcooperationwith the square end of the element 36 mounted for rotation inbracket 37. This element 36 corresponds with the usual socket member ofa winding crank used with a spring motor, and detachably engages thewinding arbor 38.

A slida-ble frame 40 surrounds and moves longitudinaly of the rack bars,being provided with inner spacing members 41 and 42 adjacent to the rackbars, and this frame serves to rotatably mount the spindle 32 carryingthe pinion. This pinion 30 is antomatically shifted from one rack bar tothe other, at the end of the stroke produced by raising or closing thecover. The shifting movement takes place in the enlarged portions formedby the yoke members at the ends of the rack bars.

At the end of each stroke engagement is effected with a suitable devicesuch as a bracket 44 or 45, as the case may be, adjustably mounted bymeans of a screw passing through the slotted portion of the bracket andengaging the element 20 or the end portion 20.

Spring held pins 48 pass through the sides of the frame 40 and are eachprovided with an eye member engaged by an arm of pivoted operatingdevice or latch 50, this device being provided with an offset end 51,directly engaged by bracket 44 at one end of the rack bars, or thecorresponding bracket at the other end.

The arrangement of two spring held pins and the operating devicestherefor is duv plicated on the opposite side of the frame 40, so thatthe pinion is shifted'laterally of the rack bars, and therefore from onerack bar to the other, at the end of each stroke produced the movementof the cover. It

ma be added that the socket member 35 sli able lon 'tudinally. of thespindle 32 and non-rotatab ethereon, is normally forced toward the leftas shown in Figure 4:, so that direct engagement is effected withelement 36, shown in Figure 3.

Having thus described the invention, I claim: v p v I ,1. In a device ofthe'class described, a reciprocable arm,-spaced rack bars connected withthe arm, a pinion for cooperation with a the rack bars, said" bars beingmountedto permit one of them to engage the pinion to the exclusion ofthe other, a frame slidable with reference to the bars, a spindlepassing through the frame between the-bars, a pin:

ion slidable on the spindle and rotatable with the latter, clearancespaces being pro-v vided between the bars near the. ends thereof, andmeans for automatically shifting the pinion through saidgclearance'spaces fronr onejbar to theiother, said meansincludingslidableelements engaging the pinion alternately from opposite sides.and pivoted members for operating the slidable elements.

'ried by the spindle, a slidable frame mounting the" spindle, springheld pins mounted in opposite sides of the frame and positioned forimparting. lateral thrust to the pinion, and means for operating certainof the pins for imparting suchthrustwhen the pinion reachesthe'endiofthe rack bar engaged thereby. i v v 3. In a device of the classdescribed, a pluralityv of rack bars, a pinion coo crating therewith,aplurality of pinion shi ting devices,- includingsprmgheld pins mountedin pairs, a frame for carrying said, pins, ivoted elei'nentsengaging thepins and incuding oflset elements, and adjustably mounted devices in thepath of movement of the offset elements. I

In testimony whereofl aflix my signature.

-MENDEL L; TABAKIN,

